How to connect points in the scatter3 plot?

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Muhammad Qaisar Fahim 2022-3-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1681884-how-to-connect-points-in-the-scatter3-plot

评论： Star Strider 2022-3-27

I have 2 vectors both have x,y and z coordinates (see attached files). I want to creat scatter plot such that point 1 in V_1 is connected to only point 1 of V_2 and similary point 2 of V_1 is only connected to the point 2 of V_2 and so on. How can I do that ?

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Answer 1

Star Strider 2022-3-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1681884-how-to-connect-points-in-the-scatter3-plot#answer_928174

在 MATLAB Online 中打开

To connect only the corresponding points (without connecting any others) requires a loop —

LD1 = load('V_1.mat');
V_1 = LD1.V_1;
LD2 = load('V_2.mat');
V_2 = LD2.V_2;
figure
hold on
for k = 1:size(V_1,1)
    plot3([V_1(k,1) V_2(k,1)], [V_1(k,2) V_2(k,2)], [V_1(k,3) V_2(k,3)], '.-')
end
hold off
grid on
view(60,15)
xlabel('X')
ylabel('Y')
zlabel('Z')

A scatter plot will not connect the points, so plot3 is required to draw the connecting lines. Choose whatever marker works best. I chose a small ‘dot’ marker here because the points are densely concentrated in part of the plot.

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